
body {
    padding: 0;
    margin: 0;
    user-select: none;
    -webkit-touch-callout: none;
}

canvas {
    position: absolute;
    z-index: -1;
    top: 0;
}

.text {
    padding-top: 30px;
    text-align: center;
    color: #eee;
}

.mask {
    position: absolute;
    display: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    justify-content: center;
    align-items: center;
    color: #fff;
    background-color: rgba(0,0,0,.5);
}

.mask .content {
    width: 600px;
    height: 300px;
    padding: 50px 0;
    text-align: center;
    overflow: hidden;
    border: 1px solid #555;
    border-radius: 20px;
    background-color: rgba(238, 238, 238, .4);
}

.mask .content .tips {
    font-size: 20px;
}

.mask .content .score {
    font-size: 80px;
    font-weight: 700;
    padding: 50px 0 50px;
}

.mask .content button {
    width: 200px;
    height: 50px;
    border: none;
    outline: none;
    font-size: 16px;
    color: #fff;
    background-color: #ff6700;
    cursor: pointer;
}

